THK NAUTILUS. 125 



Mesompliix laevigata, Pfr. 



Mesomphix hevigata latior, Pils. Save in a cliaracteristic green 

 color, this subspecies is almost inseparable from laevigata ipse. 



Vitrea carolinensis, Ckll. 



Vitrea indeniata, Say. 



Vitrea levvisiana, Clapp. 



Vitrea (Paravitrea) capsella, Gould. 



Vitrea radiatula electrina, var. circumstriata, Taylor. Tliis shell 

 has also been identified from Arkadelphia, Arkansas by Mr. George 

 H. Clapp. The species may be found all the way between, but 

 Arkansas is at present its southwestern limit. 



Vitrea (Paravitren) multiifentata Binn. This extra-limital locality 

 for multidentata evidences the keenness of Mr. Smith's eyes. It is 

 very rare, and found only in sequestered cleavages of the rocks on 

 the mountain terrace. 



Euconulus chersinus Say. 



Enconulus sterkii Dall. Only one specimen found. 



Zonitoides arboreus Say. 



Zonitoides minusculus Say. 



Zonitoides milium Morse. 



Gastrodonta suppressa Say. 



Gastrodonta inierna Say. 



Gastrodonta ligera Say. 



Gastrodonta g ilaris Say. 



Gastrodonta demissa Binn. 



Gastrodonta collisella Pils. Rare. 



Endodontidce. 



Pyramidula alternata Say. 



Pyramidula cumberlandiana Lea. Found on Smither's Mountain, 

 a peak five miles northwest of Huntsville. Not on Monte Sano. 

 Pyramidula perspectiva Say. 

 Helicodiscus parallelus Say. 

 Punclum pygmaeum Drap. 

 Succinea sp.? 



Lymnaida. 

 Lymnzea humilis Say. 

 Lymnaea columella Say. 



